Bought a pair of Remanufactured GM Chevrolet 6.2L Casting #549 Cylinder Head Direct Injection from these guys great product and service.
It's hard to believe no one has reviewed these guys yet. Very professional and detailed company it was a pleasure doing business with you. The answered the phone every time I called or answered every email in a timely manner! I will definitely use them for all my cylinder head needs moving forward. Thank again!
Product was as described and packaged well! Communication throughout prosses was also great! I will definitely be using them in the future with other projects.
Parts arrived as promised. Ported heads gave me that low end torque and high rev HP I was looking for! ...if only I did the cam at the same time.
Remanufactured Honda R18 Civic 1.8L Cylinder Head Casting # RNA
$695.00
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Additional Info
Remanufactured Honda Civic 1.8L R18A1 Cylinder Head Casting # RNA (2006–2011)
Premium OEM Replacement Cylinder Head For Honda 1.8L R18 Engines
This remanufactured Honda Civic 1.8L R18A1 SOHC cylinder head is precision-machined to restore original factory performance and fuel efficiency. Specifically designed for 2006–2011 models, this head features integrated VTEC (VVTi) technology to ensure a direct fit and long-lasting durability. Each unit is thoroughly inspected and refurbished to meet or exceed OEM specifications for reliable daily operation.
🛠️ In-House Machining Process
- Cleaning: Fully disassembled and thermally cleaned.
- Soda Blasted: Castings are blasted with Sodium Bicarbonate. Because baking soda is water-soluble, there is zero risk of abrasive media clogging oil passages.
- Pressure Testing: Tested to 60 PSI to ensure no cracks or porosity leaks.
- Surfacing: All heads are resurfaced on our Rottler S85A for a precision gasket-sealing surface.
- Valve Job: Multi-angle valve job performed; every port is Vacuum Tested to ensure valves are seated 100% airtight.
📊 Technical Specifications
- Engine Size: 1.8L
- Engine Code: R18A1
- Casting Number: RNA
- Configuration: SOHC (Single Over Head Cam) 4-Cylinder
- Condition: Remanufactured
- Technology: VTEC / VVTi Equipped
- Included Components: Valves and springs (Head Gasket and Bolts not included)
- Interchangeable Part Numbers:
- 10003-RNA-A00 ASSM
- 10003-RNA-A01 ASSM
- Core Return Required
🚛 Fitment Data
Common Applications:
- Honda Civic: 2006–2011 Honda Civic (1.8L)
[+] Click to View Full Detailed Fitment List
2007 Honda Civic 1.8L
2008 Honda Civic 1.8L
2009 Honda Civic 1.8L
2010 Honda Civic 1.8L
2011 Honda Civic 1.8L
📦 Core Return & Warranty
- Core Process: No upfront core fee. Receive your new heads and compare them to your originals before installation. Once complete, use the pre-paid return label included in your shipment. Cores must be returned within 30 days. Click here for Core Policy.
- Warranty: Includes a 2-Year Unlimited Mileage Warranty. Click here for Warranty details.
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